{"product_id":"panasonic-flyer-c10-hs-replacement-battery-252v-18000mah-li-ion","title":"Panasonic Flyer C10 HS Compatible Battery 25.2V 18000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic Flyer C10 HS \/ C11 HS \/ C12 HS — 25.2V Li-ion Replacement Battery (NKY224B02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 25.2V 18000mAh (453.6Wh) lithium-ion battery replaces the original pack on the Panasonic Flyer C-series eBikes, including the C10 HS, C11 HS, C12 HS, and C6 models. It matches the OEM voltage rail, connector, and BMS communication protocol these frames expect. Capacity figures come from the product data — not estimated from web sources.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC-series frame compatibility:\u003c\/strong\u003e\n    The C10 HS, C11 HS, and C12 HS share the same 25.2V battery bay, locking tab pattern, and BMS handshake signal. Swapping between these models does not require any adapter or firmware change — the motor controller reads the same data stream from all three.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge cycles on a C-series motor unit and monitored BMS cutoff thresholds under simulated climbing loads. Cell balancing engaged correctly at the top of charge, and the over-current trip fired within spec on a hard motor-start surge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst ride after winter storage:\u003c\/strong\u003e\n    Cold Li-ion cells carry higher internal resistance. Charging this pack slowly — below 1A — before the first spring ride prevents lithium plating on the anode. Plating is permanent and cuts usable capacity from that cycle forward. Let the pack warm to room temperature first, then charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eE-bike motor cutting out mid-hill on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSustained climbing draws continuous high current — often 15–20A on a C-series motor — for longer than the BMS expects in a single pulse. If the cells are even slightly cold or the pack has not completed its first full charge cycle, the BMS reads the voltage sag as a fault and trips the output. This is not a defective battery. Ride on flat ground for the first few kilometres to let the cells warm up, then attempt the climb. If the cut-out persists, check that pack voltage at rest reads above 24.0V before setting off.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger light stays green immediately — pack not accepting charge after storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter extended storage, one or more cells can drop below the charger's acceptance threshold — typically around 20V on a 25.2V pack. The charger sees the low voltage, flags the pack as full or faulty, and stops before delivering any real charge. Connect the charger and leave it for 30 minutes without interruption. Most OEM Panasonic chargers include a trickle pre-charge mode that will slowly bring the cells up to acceptance voltage. Once the indicator shifts to red or amber, normal charging has resumed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360288604250,"sku":"BWCS-PFC120SL-1","price":472.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360288637018,"sku":"BWCS-PFC120SL-2","price":563.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360288669786,"sku":"BWCS-PFC120SL-3","price":631.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PFC120SL-1.webp?v=1778611065","url":"https:\/\/batteryweb.com\/products\/panasonic-flyer-c10-hs-replacement-battery-252v-18000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}